| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 181 | Method and apparatus for depositing particulate material in a fibrous web | US09455029 | 1999-12-03 | US06202259B1 | 2001-03-20 | Randy Keith Burr; John Wallace de Vos; David Willis Heyn; Richard Francis Keller; Thomas George Olsen |
| A method and apparatus for depositing particulate material (30, 36) in an airlaid fibrous web (94) includes a moving of a forming surface (22) through a forming chamber (24), and a laying of a fibrous material (96) onto the forming surface to form the fibrous web. The particulate material is delivered into the forming chamber with an arcuate curved nozzle (86) which is positioned within the forming chamber at a location spaced from the forming surface. | ||||||
| 182 | Plant for producing a non-woven fiber product | US331324 | 1999-06-18 | US6141833A | 2000-11-07 | Birger Elmgaard S.o slashed.rensen |
| The invention relates to a plant for producing a non-woven, web-formed fiber product. The plant comprises a first forming wire with an inlet and outlet end and an upper part which, at the inlet end takes up a carded or air-laid layer of fiber and transports it to the outlet end. The plant also includes a roller with an upper and lower roller part for compressing the fiber layer, and a second wire, positioned above the first wire, with a lower part which extends across the roller, and a suction box which is placed above the roller. In the section (a) between the outlet end of the first forming wire and roller, the fiber layer is firmly sucked onto the under side of the lower part of the second wire via the suction box. The fiber layer is thus stabilized so that the plant can, at a considerably faster production speed than corresponding conventional systems, produce a non-woven, web-formed fiber product of high quality with an evenly distributed fiber density and uniform surface. | ||||||
| 183 | Nonwoven lap formed of very fine continuous filaments | US225415 | 1999-01-05 | US5970583A | 1999-10-26 | Robert Groten; Jean Baravian; Georges Riboulet |
| A nonwoven lap of very fine continuous filaments, crimped or not, obtained by means of a controlled direct spinning process, with a weight between 5 g/m.sup.2 and 600 g/m.sup.2, and formed, after napping, of composite filaments separable in the direction of their length, characterized in that said composite filaments have a filament number between 0.3 dTex and 10 dTex and are formed, each, of at least three elementary filaments of at least two different materials and comprising between them at least one plane of separation or cleavage, each elementary filament having a filament number between 0.005 dTex and 2 dTex, the ratio between the cross-sectional area of each elementary filament and the total cross-sectional area of the unitary filament being between 0.5% and 90%. | ||||||
| 184 | Shaped fibrous fabric structure comprising multiple layers of fibrous material | US962150 | 1997-10-31 | US5882781A | 1999-03-16 | Peter Geoffrey Lawton; Norman Smith |
| A method of producing a shaped fibrous fabric structure is similar to that described in the parent application, in that a continuous filament sheet is subjected to a needle punching action, segments are cut from the sheet and these segments are assembled to form an annulus, and then subjected to rotary motion under a reciprocating needling head and continuing to add segments to build up a stack of layers whilst at the same time continuing the needling action, and lowering the base of the stack relatively to the needling head. However, in a final step, one or more layers of segments are added to the top of the stack, and these are needled into the stack without lowering the stack. Furthermore, these additional layers are preferably made entirely of stapled fibres. Some or all of the layers of segments below the final layers may themselves be made of duplex material comprising continuous filament on which is laid a web of stapled fibres before the duplex material is produced by needling the stapled web to the continuous filaments. | ||||||
| 185 | Method and apparatus for improving the air flow through an air duct in a dry fiber web forming system | US760129 | 1996-12-03 | US5778494A | 1998-07-14 | Kenneth Stephen Freund; Andrew James Giles; Todd Arden McCoy; Lyles Howard Sowell; Phillip Osborne Staples; Leonard Ray Tucker; James Stephen Bailey |
| This invention relates to improved aerodynamics in dry fiber web forming machines and particularly to airlays which form high quality webs. The invention includes a disperser roll for feeding fibers into the air stream and a second roll opposite to the disperser roll for balancing the disruptive effects of long stationary walls and rotating members in the air duct. In one alternative arrangement of the invention, the fibers are also fed to the air stream by a second disperser roll opposite the first disperser roll. | ||||||
| 186 | Scrap fiber refeed system and method | US856407 | 1997-05-14 | US5778492A | 1998-07-14 | Leo Kurtis Thiessen; James Sheldon Graham |
| An apparatus for refeeding scrap fibers into a gaseous stream of virgin fibers and mixing the scrap fibers with the virgin fibers to form a fibrous mat includes a fiber opener for opening up and substantially eliminating scrap fiber clumps and nodules from a supply of scrap fibers by releasing scrap fibers from the clumps and nodules. The scrap fibers are conveyed by a laminar airstream from the fiber opener to a virgin fiber containing gaseous stream where the scrap fibers are mixed with the virgin fibers and the mixture of fibers is collected to form a fibrous mat. The laminar airstream for conveying the scrap fibers is preferably formed by passing the airstream through a venturi eductor to reduce turbulence and impart a more laminar flow to the airstream to reduce scrap fiber entanglement in the conveying airstream. Preferably, the scrap fibers are introduced into the conveying airstream from the fiber opener by creating a low pressure zone at an outlet of the fiber opener with the airstream which draws the scrap fibers from the fiber opener into the airstream. | ||||||
| 187 | Method and apparatus for layering a fibrous web | US653756 | 1996-05-23 | US5669109A | 1997-09-23 | Ernst Fehrer |
| A method of layering a fibrous web in overlapping layers on a draw-off conveyor along a predetermined layering distance comprises the steps of sub-dividing the fibrous web into layer sections corresponding in length to the layering distance, sequentially aspirating the layer sections by suction force against the force of gravity onto a lower strand of a continuously revolving layering conveyor extending over the layering distance and conveying the layers in a conveying direction, subsequently detaching the layer sections from the lower layering conveyor strand conveying the layer sections by interrupting the suction force, and depositing the detached layer sections only in a layering direction of the draw-off conveyor. | ||||||
| 188 | Method and device for finishing thick carded fleeces | US571770 | 1995-12-13 | US5617618A | 1997-04-08 | Gerold Fleissner |
| A method wherein a thin card web which contains meltable synthetic fibers as well as natural fibers is processed into a thicker web of fleece. The synthetic fibers are initially melted to prestrengthen the web. Then the web is saturated with the appropriate fluid finishing agent for making the web flame-resistant and the like and this web can then be readily dried on a screen drum dryer. It is at this point that the web layers are accumulated into a proper fleece in a cross layer unit which transfer the end product to a heat treatment assembly for heating to effect vulcanization, curing or setting of the synthetic fibers. | ||||||
| 189 | Linear ramped air lapper for fibrous material | US414692 | 1995-03-31 | US5605556A | 1997-02-25 | David P. Aschenbeck |
| A method and apparatus for distributing fibrous includes establishing a flow of fibrous material, positioning at least one flow distributor in a position to direct at least one gaseous flow into contact with the flow of fibrous material to distribute the fibrous material, and directing an intermittent flow of gas from the distributor, where the flow of gas increases and decreases linearly during the flow cycles. | ||||||
| 190 | High frequency air lapper for fibrous material | US414694 | 1995-03-31 | US5603743A | 1997-02-18 | David P. Aschenbeck; William A. Watton; James G. Snyder |
| A method and apparatus for distributing fibrous material includes establishing a flow of fibrous material, positioning at least two flow distributors in a position to direct a gaseous flow into contact with the flow of fibrous material, such as a flow of glass fibers, each flow distributor having an outer surface having one or more openings for the emission of gas, an inner surface having one or more orifices for the emission of gas, and a pressurized source of gas in contact with the inner surface, the inner surface being moveable with respect to the outer surface to intermittently align some of the openings with some of the orifices, thereby enabling gas from the pressurized source of gas to be emitted through the inner and outer surfaces and into contact with the flow of fibrous material to distribute the fibrous material, and moving one of the surfaces relative to the other of the surfaces to control the emission of gas from the flow distributor. | ||||||
| 191 | Aerodynamic forming hood and method of operation | US527721 | 1995-09-13 | US5539958A | 1996-07-30 | Serge Cadieux; Yvon L'Heureux; St ephane St-Cyr; Berthier Roy; Scott L. Gamble |
| An aerodynamic forming hood is provided for supplying a substantially uniform distribution of fibers in a downward laminar airstream for the deposition of the fibers on one or more forming surfaces. The hood is formed by a rectangular housing having opposed elongated downwardly diverging side walls and short downwardly diverging end walls. The housing has a smaller rectangular open top end through which a supply of fibers is released in an airstream which enters into the housing. The forming surfaces are disposed at a larger bottom forming end of the housing. The side walls and end walls in the top part of the hood are provided with elongated horizontal apertures. Controllable suction boxes are connected to the apertures for the controlled evacuation of air and fibers through the slots to substantially eliminate the formation of air turbulence and hence boundary layer separation in the airstream inside the housing to obtain the said laminar airstream with a substantially uniform distribution of fibers therein. | ||||||
| 192 | Apparatus for depositing fibers | US207058 | 1994-03-08 | US5527171A | 1996-06-18 | Birger E. Soerensen |
| An apparatus for depositing fibers on a wire (12) for the production of primarily paper products includes a wire (12) and one or more distributors (1) which are diagonal in relation to the wire (12). This minimizes disadvantages which occur when using traditional apparatuses as, in the present invention, impellers (2) mounted in the distributor (1) are provided in rows (4) which, like the distributor (1), are arranged at an angle between 0.degree. and 90.degree. in relation to the direction of movement (D) of the wire (12). | ||||||
| 193 | Method for forming a semifinished nonwoven product and a semifinished nonwoven product | US977400 | 1993-03-01 | US5476703A | 1995-12-19 | Jean-Rene Wattel; Jean-Christophe Laune; Bernard Jourde |
| A lap is produced in a spreading lapping machine (2) by successively folding a fiber web from a card (1), whereafter the lap is drawn in a drawing machine (4). The drawing machine (4) is provided with rotatable devices having peripheral fittings with spikes that are driven into the core of the lap. The degree of drawing is adjusted in such a way that most fibers in the drawn product are arranged in two directions which are substantially symmetrical relative to the lengthwise direction of said drawn product, and lie at an angle of 30.degree.-60.degree. C. relative thereto. The method is particularly useful for improving the mechanical properties of lapped products. | ||||||
| 194 | Composite nonwoven fabrics | US96706 | 1993-07-23 | US5393599A | 1995-02-28 | Thomas E. Quantrille; G. Stanley Zimmerman, Jr. |
| The invention provides elastic fabrics which exhibit low extensibility in the machine direction and have substantial elastic properties in the cross-machine direction. The fabrics of the invention include an elastic layer and a fibrous layer which are combined together. The fibrous layer is composed of a plurality of thermally activated binder fibers or filaments oriented substantially in the machine-direction of the fibrous web. The fabrics of the invention can be manufactured and processed more readily than fabrics which are elastic in both the machine direction and the cross-machine direction. | ||||||
| 195 | Apparatus for making a nonwoven web | US78017 | 1993-06-15 | US5361451A | 1994-11-08 | Ernst Fehrer |
| To make a bulky nonwoven web of low density and high uniformity with an apparatus comprising a toothed opening roller rotatable at a sufficient speed to throw off a stream of fibers centrifugally and deposit them on a revolving air-permeable collecting surface member which has a fiber-receiving portion and a suction box having an opening underneath this portion, a guide roller is spaced vertically from the fiber-receiving portion. The guide roller is rotated in a direction opposite to that of the opening roller and has a leading peripheral surface portion facing the opening roller and projecting into the stream of fibers to deflect a part of the fibers, and a trailing peripheral portion constituting a suction zone facing the fiber-receiving portion. A guide wall in the suction box opening controls the air stream sucked through the fiber-receiving portion in the direction of the movement of the collecting surface member. | ||||||
| 196 | Spreading and lap-forming machine | US969829 | 1993-02-01 | US5341543A | 1994-08-30 | Robert Jean; Bernard Chatelet; Bernard Jourde |
| A web of fibers (4) is conveyed by conveyor belts (2, 5) which pass around rollers (32 to 43, 60 to 69). Some of these rollers are carried by main carriages (10, 14) which are capable of displacement in reciprocating motion above an apron (8) which moves in a direction parallel to the axes of the rollers and collects the web (4) in the form of a lap. Auxiliary carriages (16, 18) are provided for maintaining the length of the paths of the conveyor-belts (2, 5) at a constant value in spite of the reciprocating movements of the main carriages (10, 14). Each main carriage (10, 14) is connected to an auxiliary carriage by coupling means (92, 96) which are less extensible than the conveyor-belts (2, 5) and are so arranged as to be put under tension under the action of the means (84, 88) for driving the carriages.The invention is applicable to the manufacture of nonwoven fabrics. | ||||||
| 197 | Composite elastic nonwoven fabric | US825016 | 1992-01-24 | US5334446A | 1994-08-02 | Thomas E. Quantrille; Jared A. Austin; G. Stanley Zimmerman |
| The invention provides composite elastic nonwoven fabrics and the process of making them. The composite elastic fabrics of the invention include an elastomeric net and at least one fibrous web including binder fibers and which is intimately hydroentangled with the elastomeric net. At least a portion of the binder fibers in the hydroentangled fibrous web have been thermally activated thereby bonding the hydro-entangled web into a coherent, substantially unitary structure encompassing the elastomeric net. | ||||||
| 198 | Process of detecting and compensating position errors occurring during the manufacture of a web consisting of a multilayer non-woven fabric | US679082 | 1991-06-20 | US5301399A | 1994-04-12 | Dietmar Erhardt |
| It is desired to detect and to compensate position errors occurring during the manufacture of a web consisting of a multilayer non-woven fabric by means of a laying machine, in which a web consisting of a monolayer non-woven fabric is supplied to a conveyor belt transversely to the direction of travel of said belt and is laid onto said belt by a reciprocating motion to form a multilayer web. For that purpose, the measured value signal is analyzed by machine, preferably by a Fourier transformations for errors consisting of periodically occurring fluctuations of the signal amplitude and the velocity of the conveyor belt and/or the velocity at which the monolayer non-woven web is supplied and/or the width in which the monolayer non-woven web is supplied and/or the width in which the non-woven web is laid onto the delivering belt are automatically controlled to minimize the periodic fluctuations of the signal amplitude. | ||||||
| 199 | Apparatus for making a nonwoven web | US983760 | 1992-12-01 | US5289618A | 1994-03-01 | Ernst Fehrer |
| An apparatus for making a nonwoven web has a carding drum (1), a continuously moving, air-permeable collecting surface member (2) for collecting fibers which fly in an entraining air stream from the carding drum (1), a suction box (4), connected to the collecting surface member (2), and a suction duct (3) extending between the collecting surface member and a peripheral portion of the carding drum (1) which is directly opposite to the collecting surface member (2). In order to ensure desirable conditions of flow in the suction duct (3), air supply passages (10, 11) extend over the working width of the carding drum (1) in the region in which the carding drum (1) is adjacent to leading and trailing suction duct walls (3a and 3b), with respect to the direction of rotation of the carding drum (1), and the air supply passag extend between the carding drum (1) and two drum guards (12 and 13), which respectively extend opposite to the direction of rotation of the drum from the leading duct wall (3a) and in the direction of rotation of the drum from the trailing duct wall (3b). | ||||||
| 200 | Process and device for the manufacture of non-woven fabrics | US440688 | 1989-11-24 | US5060347A | 1991-10-29 | Michel F. M. J. A. D. Beckers |
| Non-woven fabrics are manufactured using a carding machine with outlet comb, a blamire feed or spreader/batt-making machine with cylinders for depositing a web of fibers, and one or more needling devices. The surface weight of the web delivered by the carding machine to the blamire feed is modified by varying the speed of the comb as a function of the changing positions of the cylinders whereby a batt of variable surface weight over its width is obtained so as to counteract the distortions of surface weight distribution produced by the needling devices. | ||||||
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